Orthodontic appliance



FIG. 1 is a bottom, front, left side perspective view of an orthodontic appliance showing our new design;

FIG. 2 is a top, rear, left side perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a front elevational view thereof;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a bottom, front, left side perspective view of an orthodontic appliance illustrating another embodiment of our new design;

FIG. 10 is a top, rear, left side perspective view thereof;

FIG. 11 is a left side elevational view thereof;

FIG. 12 is a right side elevational view thereof;

FIG. 13 is a top plan view thereof;

FIG. 14 is a bottom view thereof;

FIG. 15 is a front elevational view thereof; and,

FIG. 16 is a rear elevational view thereof.

The broken line drawing of an archwire slot liner is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an orthodontic appliance, as shown and described. 